Sumner, WA Radon Levels
Check local Sumner radon levels and find certified testing and mitigation professionals to keep your home safe
Sumner, WA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Pierce County, WA
Zip Code
98390
Nestled in Pierce County within the Seattle Metro area (zip code 98390), Sumner lies in the Puyallup River valley where glacial deposits and volcanic soils create complex radon patterns. While specific testing data for this community is limited, the diverse geological setting suggests variable radon potential across different neighborhoods. Washington's mix of volcanic and sedimentary formations means individual home testing provides the most accurate radon assessment.
Sumner, WA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Sumner?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Pierce County Pros
Radon FAQ for Sumner, WA
What EPA Radon Zone is Sumner in?
Sumner and the 98390 zip code are in Pierce County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.
How much does radon mitigation cost in Sumner?
Radon mitigation in Sumner typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Sumner?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.
Most Active Radon Markets in Washington
Cities in Washington with the most user-submitted radon test data, ranked by number of submissions.